Ejabberd tsung test limits to 1005 online users - ejabberd

Question

I need test max online users supported by my ejabberd. I use tsung, but i faced issue, inly 1005 online users from 1 client computer.
I have run tsung -l tsung-logs -f chat-4k.xml start
chat-4k.xml file
<?xml version="1.0"?>
<!DOCTYPE tsung SYSTEM "/usr/local/share/tsung/tsung-1.0.dtd">
<tsung loglevel="info" version="1.0" dumptraffic="false">
<clients>
<client host="localhost" maxusers="200000"/>
</clients>
<servers>
<server host="jabberserver" port="5222" type="tcp"/>
</servers>
<load>
<arrivalphase phase="1" duration="14400" unit="minute">
<users arrivalrate="10" unit="second"></users>
</arrivalphase>
</load>
<options>
<option type="ts_jabber" name="global_number" value="100"></option>
<option type="ts_jabber" name="userid_max" value="100000"></option>
<option type="ts_jabber" name="domain" value="tst.pinkmess.xyz"></option>
<option name="file_server" id='userdb' value="/tmp/test/userlist4.csv"/>
<!-- <option type="ts_jabber" name="username" value="user"></option>
<option type="ts_jabber" name="passwd" value="pass"></option> -->
</options>
<sessions>
<session bidi="true" probability="100" name="xmpp" type="ts_jabber">
<setdynvars sourcetype="file" fileid="userdb" delimiter=";" order="iter">
<var name="username" />
<var name="password" />
</setdynvars>
<transaction name="initial_stream">
<request subst="true">
<jabber type="connect" ack="local">
<xmpp_authenticate username="%%_username%%" passwd="%%_password%%"/>
</jabber>
</request>
</transaction>
<thinktime value="2"/>
<transaction name="authenticate">
<request> <jabber type="auth_sasl" ack="local"/> </request>
<request> <jabber type="connect" ack="local"/> </request>
<request> <jabber type="auth_sasl_bind" ack="local"/> </request>
<request> <jabber type="auth_sasl_session" ack="local"/> </request>
</transaction>
<thinktime value="1"/>
<request subst="true">
<jabber type="presence:initial" ack="no_ack"/>
</request>
<for from="1" to="100" incr="1" var="j">
<request subst="true">
<jabber type="chat" ack="no_ack" size="500" destination="online"/>
</request>
<thinktime value="5"/>
</for>
<request subst="true">
<jabber type="presence:final" ack="no_ack"/>
</request>
</session>
</sessions>
</tsung>
Only 1005 online users from one client computer. I have run test on another client VM it also gives 1005 online users. From 2 client VM a generates only 2010 online users.
Tung log has error
stats: dump at 1571563726
stats: users 1006 1009
stats: {cpu,"tsung_controller#nb-ivanov"} 1 46.80573663624511 0.0 57.691309987029825 32.14969234558683 41.291614334365065 10
stats: {load,"tsung_controller#nb-ivanov"} 1 1.609375 0.0 2.01171875 1.609375 1.812890625 10
stats: {freemem,"tsung_controller#nb-ivanov"} 1 2144.73046875 0.0 2294.95703125 2135.203125 2183.86171875 10
stats: session 28 77.93410714285714 9.264334616224604 108.182 68.178 0 0
stats: users_count 91 1034
stats: finish_users_count 28 28
stats: request 445 47.600876404494386 21.31547418108496 140.158 0.03 48.23643842794759 4580
stats: connect 65 42.36301538461539 4.39096055547796 85.906 33.592 42.63856170212765 940
stats: page 2225 9.801699775280849 36.93811095526636 245.732 0.009 19.20556423001114 11669
stats: tr_authenticate 96 166.69216666666654 31.625195579983718 246.623 108.536 155.72595489548956 909
stats: request_noack 2064 11884
stats: tr_initial_stream 88 85.87685227272726 11.180942522617931 141.442 66.816 88.95005212765957 940
stats: size_rcv 1408228 8612676
stats: async_unknown_data_rcv 2135 12866
stats: error_connect_emfile 96 96
stats: size_sent 1206452 7012283
stats: connected 65 1005
stats: error_abort_max_conn_retries 23 23
How to increase connected online users form one client VM?

Answer 1

See step 1 in this tutorial, maybe your clients are limited, and you need to set ulimit or other system setting? https://www.ejabberd.im/benchmark/index.html